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The UV Warning SignalTM Model 511, manufactured by Solar Light Company for the Skin Cancer Awareness Foundation, is a device which displays the real-time UV Index in order to raise public awareness of UV radiation exposure in areas such as school yards, swimming pools, beaches, ski slopes, golf courses, and stadiums. The UV Warning SignalTM uses a series of lights similar to a traffic light to indicate the intensity of the sun's UV radiation. A UV sensor, designed to emulate the skin's response to the sun, sends a signal which illuminates one of the five colored lights on the display unit. Each light corresponds to a UV Index exposure category as defined by the World Health Organization and US EPA. The unit can be pole or wall mounted with the UV sensor located up to 100 feet away.